Adjustable blade coater
US5378503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | May 24, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/041
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A web coater is provided with a doctor blade having an active edge or tip engaging the web at a predetermined position. The force applied by such active edge is adjusted by movement of jaws gripping the opposite edge of the blade. The jaws are moved along a curve empirically established to maintain the active edge of the blade in a predetermined fixed position during the adjustment. The angle of incidence of the active edge of the blade relative to the web is also maintained constant by pivoting a blade supporting frame about an axis coincident with the active edge. A controller is supplied with empirically established data developed by utilizing test blades to establish polynomial formulas having constants corresponding to each of the various blades intended to be used by the coater. The controller also automatically compensates for blade wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.